E73.9

Approximate Synonyms

• Intestinal disaccharidase deficiency

• Lactose intolerance

Clinical Information

• Lactose intolerance means that you cannot digest foods with lactose in them. Lactose is the sugar found in milk and foods made with milk. After eating foods with lactose in them, you may feel sick to your stomach. You may also have

• The condition resulting from the absence or deficiency of lactase in the mucosa cells of the gastrointestinal tract, and the inability to break down lactose in milk for absorption. Bacterial fermentation of the unabsorbed lactose leads to symptoms that range from a mild indigestion dyspepsia) to severe diarrhea. Lactose intolerance may be an inborn error or acquired.

• The inability to digest or absorb lactose, a type of sugar found in milk and other dairy products.

Details

• E73.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

• The 2023 edition of ICD-10-CM E73.9 became effective on October 1, 2022.

• This is the American ICD-10-CM version of E73.9 – other international versions of ICD-10 E73.9 may differ.